THE EXORCIST 9.57 @ 147 MPH 1/4 Mile

Hennessey Performance turned a Chevrolet Camaro ZL1 into ‘The Exorcist’ — a 9.57-second quarter-mile machine hitting 147 mph, with 0-60 in 2.1 seconds and 0-100 in 4.7. Viewers are just as impressed that it does it all without a dual-clutch transmission, calling it ‘a very impressive job’ on Chevrolet’s part. Watch to see how a factory-based muscle car ended up trading blows with the world’s fastest hypercars.

Most tuning shops chase bragging rights with a big number and call it done. Hennessey Performance built something that needed an exorcism-themed name just to keep up with what it actually does. Starting life as a Chevrolet Camaro ZL1 — already one of the most track-capable muscle cars GM has ever built — this particular car left Hennessey’s shop transformed into something closer to a purpose-built quarter-mile weapon, one that dips into the 9-second range at a trap speed most supercars can only dream about. The number on the timeslip is impressive. How the car gets there, using a transmission most people assumed couldn’t handle it, might be the more interesting story.

Starting Point: A Camaro ZL1 That Was Already Serious

The Camaro ZL1 wasn’t a modest starting point to begin with — GM’s supercharged, track-focused Camaro flagship already competed with genuine sports cars on road courses and drag strips in stock form, running a supercharged 6.2-liter LT4 V8 and a chassis tuned specifically for serious performance driving. That’s an important detail, because Hennessey didn’t take a base Camaro and simply bolt on power; they started with a car that was already near the top of GM’s performance hierarchy and pushed it into an entirely different category.

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What ‘The Exorcist’ Name Actually Signals

Hennessey named this build ‘The Exorcist,’ a title that fits a car whose performance numbers seem to demand some kind of supernatural explanation. Naming conventions like this aren’t just marketing flourish for a shop like Hennessey — they signal a build significant enough to get its own dedicated identity, complete with its own merchandise and its own page on Hennessey’s site, separate from the company’s broader catalog of tuned vehicles.

Breaking Down a 9.57-Second Quarter Mile

The headline number is a 9.57-second run at 147 mph in the quarter mile, a combination of elapsed time and trap speed that puts this Camaro solidly in territory usually reserved for purpose-built drag cars or genuine hypercars, not a car that started life as a production Chevrolet. Getting into the 9s from a factory-based platform requires addressing nearly every system on the car — power, traction, cooling, and drivetrain durability all have to scale together, because pushing horsepower alone without the supporting hardware just means a spectacular way to break parts.

Why the Quarter Mile Still Matters as a Benchmark

In an era where 0-60 times and top speed numbers dominate most performance conversations, the quarter mile remains the benchmark that ties everything together — it rewards not just outright horsepower, but traction, gearing, and consistency across an entire run rather than just the first few seconds. A 9.57-second pass demonstrates that The Exorcist isn’t just quick off the line; it keeps pulling hard all the way through the trap, which is a much harder standard to meet than a strong launch alone.

The 0-60 and 0-100 Numbers That Matter More Than the ET

Just as telling as the quarter-mile number are the acceleration figures: 0-60 mph in 2.1 seconds and 0-100 mph in 4.7 seconds. Those numbers put The Exorcist’s initial acceleration in the same conversation as the fastest production hypercars in the world, a genuinely remarkable outcome for a car whose starting point was a two-door American muscle coupe rather than a carbon-tubbed exotic built from scratch for exactly this purpose.

How The Exorcist Compares to Factory Hypercars

Trap speeds in the 147 mph range at the end of a quarter mile are the kind of number associated with the fastest production hypercars in the world, cars that often cost many multiples of what a Camaro ZL1 starts at before any modification. That comparison is exactly why builds like this generate so much attention — it’s not just that a Chevrolet is fast, it’s that a heavily modified Chevrolet is trading blows with cars built from the ground up to chase exactly these numbers.

The Transmission Question Nobody Expected to Be Impressive

One of the more pointed comments on the video zeroes in on something specific: how quickly the car shifts despite not using a dual-clutch transmission, calling it ‘a very impressive job’ on Chevrolet’s part. Dual-clutch gearboxes have become the default assumption for cars chasing serious acceleration numbers because of how quickly they can execute shifts without interrupting power delivery, so a traditional automatic keeping pace well enough to help produce a 2.1-second 0-60 time genuinely surprised viewers who expected a dual-clutch to be doing the work.

How Hennessey Gets a Factory-Based Camaro to Supercar Numbers

Getting a factory-based Camaro to supercar-rivaling numbers requires Hennessey to work through the entire power chain, from a heavily upgraded supercharger system and supporting fuel delivery to a reinforced drivetrain capable of handling dramatically more torque than the ZL1 was ever engineered to see from the factory. Tire and traction management become just as critical as horsepower once numbers get this extreme, because putting that much power to the ground consistently — run after run — is often harder than making the power in the first place.

American Muscle’s Comeback, One Timeslip at a Time

The comments on this video reflect a broader sentiment among American muscle car fans right now: a sense that domestic performance cars are genuinely competing with, and in some cases beating, foreign sports cars and supercars that used to hold an uncontested performance advantage. Builds like The Exorcist are exactly the kind of proof point that fuels that sentiment, because the underlying platform is a mass-produced Chevrolet, not a limited-run exotic with a price tag to match.

Where Tuner School Fits Into Hennessey’s Bigger Picture

Hennessey doesn’t just build one-off showpieces like The Exorcist — the company also runs Tuner School, a program built around teaching the exact skills that go into projects like this one, from chassis dyno tuning to quarter-mile-specific setup work, at Hennessey’s own campus. That educational side of the business matters for understanding builds like The Exorcist: this isn’t a single lucky combination of parts, it’s the output of a shop that has systematized the process of turning a factory muscle car into a record-chasing machine.

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